I'm thinking of changing his weapon, I mean in a wasteland you try to hunt for food, right? So a pistol wouldn't really work. Either I change it to a rifle or a highly advanced sci-fi style Gauss hand gun. For that matter maybe, hundreds of years and maybe tries at recreating earth, the waste land would be a bit more hospitable than an endless dusty plane. As the radiation slowly wares of a few plants struggle worth from the ground to a harsh unmediated sun, and little to no fertile soil or water. I think that would be interesting to see.